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Organization - Summary of Annual Percentage of Installation Net Revenue by Product Category (Detail) - Customer Concentration Risk [Member] - Revenue [Member]	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Concentration Risk [Line Items]
Net revenues percentage	100.00%	100.00%	100.00%
Insulation [Member]
Concentration Risk [Line Items]
Net revenues percentage	66.00%	67.00%	77.00%
Waterproofing [Member]
Concentration Risk [Line Items]
Net revenues percentage	7.00%	8.00%	2.00%
Shower Doors, Shelving and Mirrors [Member]
Concentration Risk [Line Items]
Net revenues percentage	7.00%	7.00%	5.00%
Garage Doors [Member]
Concentration Risk [Line Items]
Net revenues percentage	6.00%	5.00%	6.00%
Rain Gutters [Member]
Concentration Risk [Line Items]
Net revenues percentage	3.00%	4.00%	4.00%
Blinds [Member]
Concentration Risk [Line Items]
Net revenues percentage	2.00%	2.00%	1.00%
Other Building Products [Member]
Concentration Risk [Line Items]
Net revenues percentage	9.00%	7.00%	5.00%

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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